How to run spline regression on temperature bins in Stata?

[Jurat Shahidin]

Hi:

I am sorry for beginner question. I have never used spline regression in Stata, so it is a bit of new for me how to run spline regression on those temperature bins data down below. I just got a very basic idea of spline regression model, but in terms of environmental economic setting, I have a little idea how should I run spline regression on that. Can anyone give me a possible lead or general spline regression strategy for bins temperature data? Or any reference Stata command that allows me to see how spline regression works on temperature bins data? Thanks in advance and sorry if my question is too easy for you!

Here is example snippet temperature bin data:

 
1980
9
6
20
23
31
42
38
21
36
44
41
26
18
8
3

1981
5
12
27
26
23
35
23
26
30
48
39
37
19
8
7

1982
9
2
14
21
28
38
33
35
33
29
38
34
22
18
11

1983
5
12
10
19
32
32
32
36
43
29
39
19
23
18
16

1984
0
5
10
26
47
42
31
23
46
50
42
20
14
6
4

1985
28
12
14
23
27
28
30
21
36
37
47
35
16
9
2

1986
20
10
13
22
23
33
24
46
37
50
22
23
20
16
6

1987
23
10
21
23
22
17
35
37
43
31
48
26
16
9
4

1988
0
1
3
21
32
49
45
29
29
44
48
38
17
8
2

1989
0
3
11
13
37
35
36
47
31
34
34
31
33
11
9

1990
0
0
5
21
21
39
45
36
47
43
39
29
18
13
9

1991
8
8
20
17
28
40
32
38
37
45
26
30
19
7
10

1992
6
4
10
6
29
54
50
33
32
17
31
33
30
23
8

1993
7
8
25
16
28
32
36
29
32
39
45
32
26
10
0

1994
5
5
6
10
31
34
37
46
36
42
41
22
13
17
20

[Maarten Buis]

What is missing in your snippet are the variable names. Also missing is an exact description of what you want to do. You want a "spline regression", but how does that relate to your data? What is your dependent and independent variable?